Jack tool



Dec. 10, I929. H. E. WHITE 1,738,679

JACK TOOL Filed Sept. 10, 1928 Inventor fiwazzi 1331 15212? M /7 v Attomv Patented Dec. 10, 1929 'HOWARD E. WHITE,- or HoLnEivvILLn, OKLAHOMA, ASSIGNOR or, ONE-HALF T0 HARRY R. ALLEN, OF HOLDENVILLE, OKLAHOMA JAcK TOOL Application filed September 10, 1928.. Serial No. 304,963; I

The present invention relates to improvements in special tools and has reference more particularly to a ack tool for positioning girts such as are used in Conjunction with the derrick structure embodied in my copending application.

One of the important objects of the present invention is to provide a jack tool which will greatly facilitate the positioning of the girts 0 on the derrick, so that the sections of the derrick will be properly supported during the assembly and construction of the derrick.

Still a further object is to provide a jack tool of the above mentioned character that will, at all times, be efficient and reliable in its operation, the same being further simple in construction, inexpensive, strong anddurable, and further well adaptedto the purpose for which it is designed.

Other objects of the invention will become apparent during the course of the following detailed description. I 7 I In the accompanying drawings, forminga part of this application, and wherein like reference characters designate like parts throughout the several views: j V

Figure 1 is a side elevation of the jack tool embodying my invention, showingthe same in the act of positioning a girt.

Figure 2 is a top plan view thereof.

Figure 3 is a detail perspective view of the hooked bar member forming a salient part of the present invention, and

Figure 4 is a detail perspective view of the stud engaging finger.

In the drawings, wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 desig nates the angle iron girt, the specific construction of which is disclosed my co-pending application and this girt-is adapted to span the splice bar units 2 carried by the upper ends of the sections 3 of the adjacent corner posts, also more specifically described in my copending application.

As clearly shown and described in my aforesaid co-pending application, a pair of spaced fastening elements a and 5 respectively are associated with each splice bar unit, between which fastening elements is adapted to be disposed the fingers 6, formed at the re- 'spectiveends of the vertical walls of the angle iron girt 1.

In order to facilitate the installation of these girts during the construction of my derrick, it is necessary to employ a special tool, and to this end the jack tool which I use is shown generally at 7. i

This tool comprises an elongated lever 8, the lower end of which is forked, as shown at 9, with reference more particularly to Fi ure 2. A spindle 10 extends laterally from the lever Sat point above the fork 9 for receiving the looped inner end portion 11 of an elongated fiat bar 12, whereby said bar member is pivotally associated with the spindle 10. Any appropriate means may be pro.-- vided on the outer end of the spindle to prevent the casual displacementof the looped inner end 11 of the bar member therefrom. As clearly shown in Figure 3, the outer free end of the bar memberlQ is bent back upon itself to form a hook 18 that is adapted to engage over the right hand end of the horizontal portion of the angle iron girt 1, the bar 12 being adapted to b'e disposed across the upper face of the horizontal portionof this end of the girt. i I

A lip 14 extends downwardlyfroin the outer side edge of the bar 12 adjacent the hook 13 for engagement with the: adjacent edge of the horizontal portion of the girt 1, in the manner as shown in Figure 1. The lever 8 is disposed adjacentthe vertical wall of the girt for'disposition-insideof the-frame structure of the derrick, and -pivotally mounted on a pintle 15, that extends transversely across the fork 9 is the inner end of a bar like finger 16, the outer end thereof being formed with a notch 17, as'cl'early illustrated its-finger positioned between the fastening 9'5 I end 9 of the lever 8 extends alongside of. the vertical wall of the girt. The bar 12 is positioned across the upper face of the right hand-end portion of the horizontal wall of the girt with the hooks 13 engaging over the outer end of the girt. The notched finger is then brought into engagement with the fastening element 4, and manifestly by swinging the lever 8 downwardly, the spindle will force the right hand end portion of the girt 1 downwardly so thatthe finger at the righthand end of the girt will be properly positioned between the adjacent fastening elements 4: and '5 of the right hand splice-bar unit. After the girt has been properly positioned, the jack tool can be readily and easily removed, andwhen all'of the girtsassociated with one section of the derrick have fat been properly positioned, the superjacent sec-- tion of the derrick-may be builtup in the manner as also defined in my co-pending application;

It will thus be seen from the foregoing description that I have provided a particular tool for use .in conjunction with the -assembling of my improved derrick" construction which will save considerable time and labor 'inpositioning the girts. The simplicity of my tool enables the same to be constructed 'at a very low cost and furthermore the tool will, at all times, be efficient and reliable in carrying out the purposes for which it is designed.

While I have shown the preferred embodimentof my invention, it is to be understood that various changes in thesize, shape and arrangement-'ofparts may be resorted to,

- withoutdeparting from the spirit of the in- .girt, and a bearing element connected with said end of the lever.

2. In a jack tool for use with the girts a derrick structure, a lever, a member extending upwardly from the lower end of the lever for disposition across the top of the girt to: force the latter downwardly when the lever isactuated, a hooked bar attached at its inonv ried by the derrick structure, an elongated lever, the lower end thereof being curved downwardly, a finger pivoted at its inner end on the curved lower end ofthe lever, the outer end of the finger being notched for engages ment with said stud, aspindle projecting lat erally from the lever adjacent the curved lower end thereof for disposition across the top of'the girt, and means attached to said spindle forengagernent withthe end o-fthe'g'irt for moving the adjacent portion of the derlilck structure into position for properlyreceiving said adjacent end of the girt.

- 4.,In a jack tool.,,fo r positioning the girts. on a derrickstructure wherein a stud is can ried by the derrick structure, an elongated downwardly, a finger pivoted at its'innerend lever, the. lower end thereof being curved V on the curved lower end, of the lever, the outor end 'ofthe finger being notched for en.-

gagement with said stud, a spindle projecting laterally frointhe lever adjacent the curved lower end thereof for disposition across the top of the girt, and means attached to said spindle for engagement with the end of the girt for moving the adjacent portion of the derrickstructure into position for properly receiving said adjacent end of the girt, said last mentioned means com-Q prising a bar pivotally connected at, its in ner end to said girt engaging member carried-byvthe lever,. the outer endofthe bar being'formedflwith a hook for engagement over the end of the girt, 1

5. In a jack tool for use with the spaced uprights of a sectional derrick, and a girt adapt-c ed for disposition between said uprights, a

rights, a girt engaging means, and as act-nab ing member operatlvely connected with the first mentioned member and said means for .membenfor engagement with one. of the up- 1 positioning the girt. in locked engagement with the uprights. v

In testimony whereof I afliX mysignature .HOWARD E. WHITE.

- ner end to the member for engagement over the adjacent end of the girt, and afinger 1 pivoted atits inner end to the lowerend of the lever, the outer end of said finger adapted to engage the adjacent portion of the, derrick structure. 1

i 3. In a jack tool for positioning the girts :on a derrick structure wherein a stud is- (:flI.'-' 

